Two people were taken to the hospital after being exposeds to hydrogen sulfide. The last thing they needed. Now to Malaysian flight 370. New satellite images from the French government showing potential objects floating in the south Indian ocean. Planes and ships out overnight searching for this object spotted by a Chinese satellite. We have team coverage, starting with David Curley in Washington. Good morning. Reporter: As you mentioned, more satellite images to study. These from the French. It's the third set of pictures that show potential debris in the search area off Australia. All helping to narrow the effort, but will it help find the plane? Today, a total of eight aircraft criss-crossing the search area, including four commercial jets. Trying to eyeball debris on the surface of the rough southern Indian ocean based on the satellite images. Something just 79 miles from the satellite pictures released by the Australians. And now the French pictures. We have had a number of very credible leads. And there is increasing hope. No more than hope. No more than hope. That we might be on the road to discovering what did happen to this ill-fated aircraft. Reporter: The photos taken days apart were days old when they were released. It was just that I got some breaking news -- Reporter: With drama, the Malaysian releasing news of the Chinese photos in a press conference. But because of the delays, debris, if ever found, could be hundreds of miles from a possible crash site where those black boxes could be on the ocean floor. And the batteries have just a couple of weeks of power remaining to send out a signal. The Australians just announced they are sending this vessel to the search area. It carries a mini-sub that may be able to assist in listening for those pings. The Malaysians canceled today's news conference. The only thing spotted from the air so far, a wooden palette. Two Chinese planes in Australia, two from Japan on their way as this search there is finally being beefed up. Thank you. And let's bring in colonel Steve ganyard from Washington. We have satellite images from the Chinese and the French. Does it make you confident they are pieces of the planner? A little. Still just images. We have to get ships out there to pick up what it is. They could be palettes, just junk drifting around the ocean. It's tantalizing, everybody oes hoping, but I don't see much Mo move forward on today. Two separate investigations, one for the debris, and the other for the plane and the crucial black box. I think we need to think of this as two separate searches. One, we have the debris that has been drifting for two weeks now and we hope to pick something up there. But remember the airplane hit the water some three to 700 miles back to the west. There needs to be a surface search to see what might still be floating out to the east. But the real search underwater 6 six to 700 miles away from the debris. It's a tough nut to crack. And quickly, into week two of the search. How much has the lag in time harmed the investigation? Just the distance it's created. Because if we find debris, it's not going to be helpful in finding the airplane. Just because we have so much time for the wind and the currents to disperse the debris. It's not helpful in finding the black boxes. That's not something we want to hear. And less that two weeks before they run out of batteries. At what point do they call off this search? That's a tough call. Remember in air France, it took them two years. They continued. They continued to send out expedition after expedition and eventually got to it when they applied some very scientific statistics to it. And that was the break through. So hopefully somebody will come up with a good idea and look where the aircraft impacted the ocean. For now, things are quite dim. Hopefully, especially for the family's sake they will find something soon. Steve, we appreciate your time. Thank you. Dan. Thank you. This is what one of the all-important black boxes looks like. Despite the name, it's Orange. This is the flight data recorder similar to the one on flight 370. With us now is former ntsb safety cheap Tom how'der. Thanks for being here. This is the ping. And this is the noise it makes. It sounds like this. We have the noise. Going to play it. Okay, so it sounds like this -- kind of like a metro gnome. But as bianna pointed out, it's going to stop in two weeks, maybe a littleless. What do you do after this point to find the plane if we haven't found it by then? The pinger may last longer. Up to 45 days. Maybe a couple weeks. You can get lucky occasionally. After that, what you have to do is basically pick a good area and start doing side scan sonar, looking for the wreckage. That is very difficult because you have to find a narrow area and search the ocean. With submarines or a plane low over the water? To ships and submarines. A ship, device in the water that just scans the ocean bottom lo looking for wreckage. That was on air France 447. Tim time-consuming especially when we don't know where the plane is. Where on the plane would you find a black box on a Boeing 777, and how difficult to recover given we may talk about a rough ocean floor? The box itself is in the tail of the aircraft. The lower level. You can't reach it during the flight. It's very well-protected. Now, the problem you have is on the bottom, is it combined in other wreckage? By itself, making it harder to find. In air France 447, it was by itself. Picked it up. And things could get lost it. I don't know. So much of a long road to go and so many variables ahead. Tom, we appreciate your guidance. Thank you very much. ABC news is all over this story. Check ABC news.com for updates throughout the day.

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